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Using synthetic multi-element standards (SMELS) for calibration and quality control of the irradiation facilities in the BR1 reactor

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Abstract

The thermal to epithermal neutron flux ratio (f) and the deviation of the epithermal neutron spectrum from the 1/E shape (α) are essential parameters for the correct application of k 0-standardized neutron activation analysis. Several methods are applied for the determination of f and α. They are based on Cd-covered multi-monitor or on bare-irradiations methods. The recently developed and characterized synthetic multi-element standards (SMELS) were designed as a validation tool for the proper implementation of the k 0-NAA method in a laboratory. In particular, SMELS Type III contains Au and Zr, thus allowing the direct determination of f and α. It could, therefore, replace the traditional flux monitors. Furthermore, it could be used as a quality control material to monitor the stability of the irradiation facility and the detector. This paper presents the accuracy of the f and α determination and the feasibility of quality control using SMELS for irradiation channel Y4 of the BR1 reactor.

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Authors and Affiliations

  1. SCK·CEN, Belgian Nuclear Research Centre, Boeretang 200, B-2400, Mol, Belgium

    P. Vermaercke & L. Sneyers

  2. Institute for Reference Materials and Measurements, European Commission, IRMM, Retieseweg 111, B-2440, Geel, Belgium

    P. Robouch

  3. Laboratory of Analytical Chemistry, Institute for Nuclear Sciences (INW), Ghent University, Proeftuinstraat 86, B-9000, Gent, Belgium

    F. De Corte

Authors
  1. P. Vermaercke
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  2. P. Robouch
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  3. L. Sneyers
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  4. F. De Corte
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Correspondence to P. Vermaercke.

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Vermaercke, P., Robouch, P., Sneyers, L. et al. Using synthetic multi-element standards (SMELS) for calibration and quality control of the irradiation facilities in the BR1 reactor. J Radioanal Nucl Chem 276, 235–241 (2008). https://doi.org/10.1007/s10967-007-0439-z

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  • DOI: https://doi.org/10.1007/s10967-007-0439-z

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